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Hongliang Chen
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Shanghai, CN
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Patents Grants
last 30 patents
Information
Patent Grant
Intelligent life testing methods and apparatus for leakage current...
Patent number
7,592,924
Issue date
Sep 22, 2009
General Protecht Group, Inc.
Feng Zhang
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Intelligent life testing methods and apparatus for leakage current...
Patent number
7,525,441
Issue date
Apr 28, 2009
General Protecht Group, Inc.
Feng Zhang
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Apparatus and methods for testing the life of a leakage current pro...
Patent number
7,522,064
Issue date
Apr 21, 2009
General Protecht Group, Inc.
Feng Zhang
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Intelligent life testing methods and apparatus for leakage current...
Patent number
7,492,559
Issue date
Feb 17, 2009
General Protech Group, Inc.
Feng Zhang
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Patents Applications
last 30 patents
Information
Patent Application
Intelligent life testing methods and apparatus for leakage current...
Publication number
20070195470
Publication date
Aug 23, 2007
General Protecht Group, Inc.
Feng Zhang
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Application
Intelligent life testing methods and apparatus for leakage current...
Publication number
20070146947
Publication date
Jun 28, 2007
General Protecht Group, Inc.
Feng Zhang
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
Intelligent life testing methods and apparatus for leakage current...
Publication number
20070146945
Publication date
Jun 28, 2007
General Protecht Group, Inc.
Feng Zhang
G01 - MEASURING TESTING
Information
Patent Application
Apparatus and methods for testing the life of a leakage current pro...
Publication number
20070146944
Publication date
Jun 28, 2007
General Protecht Group, Inc.
Feng Zhang
G01 - MEASURING TESTING